I know there's one for Windows users (Not sure if it's still being maintained), but nothing for MacOS users.
Been finding a certain amount of resistance from 3rd-party preset-developers, in terms of providing NKS or more specifically audio previews for NKS stuff.
It's understandable that many wouldn't want to sink the extra development time into it, but leaves many users in a situation in which the new hub of our productions is missing huge swathes of searchable, preview-able sounds.
I'm not adverse to the idea of organising stuff myself, but without some kind of tool to help cut out a lot of repeated tasks, it seems like a total waste of time and energy